1 /*
2 * user-internals.h: prototypes etc internal to the linux-user implementation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */
17
18 #ifndef LINUX_USER_USER_INTERNALS_H
19 #define LINUX_USER_USER_INTERNALS_H
20
21 #include "user/thunk.h"
22 #include "qemu/log.h"
23
24 extern char *exec_path;
25 void init_task_state(TaskState *ts);
26 void task_settid(TaskState *);
27 void stop_all_tasks(void);
28 extern const char *qemu_uname_release;
29 extern unsigned long mmap_min_addr;
30
31 typedef struct IOCTLEntry IOCTLEntry;
32
33 typedef abi_long do_ioctl_fn(const IOCTLEntry *ie, uint8_t *buf_temp,
34 int fd, int cmd, abi_long arg);
35
36 struct IOCTLEntry {
37 int target_cmd;
38 unsigned int host_cmd;
39 const char *name;
40 int access;
41 do_ioctl_fn *do_ioctl;
42 const argtype arg_type[5];
43 };
44
45 extern IOCTLEntry ioctl_entries[];
46
47 #define IOC_R 0x0001
48 #define IOC_W 0x0002
49 #define IOC_RW (IOC_R | IOC_W)
50
51 /*
52 * Returns true if the image uses the FDPIC ABI. If this is the case,
53 * we have to provide some information (loadmap, pt_dynamic_info) such
54 * that the program can be relocated adequately. This is also useful
55 * when handling signals.
56 */
57 int info_is_fdpic(struct image_info *info);
58
59 void target_set_brk(abi_ulong new_brk);
60 void syscall_init(void);
61 abi_long do_syscall(CPUArchState *cpu_env, int num, abi_long arg1,
62 abi_long arg2, abi_long arg3, abi_long arg4,
63 abi_long arg5, abi_long arg6, abi_long arg7,
64 abi_long arg8);
65 extern __thread CPUState *thread_cpu;
66 abi_long get_errno(abi_long ret);
67 const char *target_strerror(int err);
68 int get_osversion(void);
69 void init_qemu_uname_release(void);
70 void fork_start(void);
71 void fork_end(pid_t pid);
72
73 /**
74 * probe_guest_base:
75 * @image_name: the executable being loaded
76 * @loaddr: the lowest fixed address within the executable
77 * @hiaddr: the highest fixed address within the executable
78 *
79 * Creates the initial guest address space in the host memory space.
80 *
81 * If @loaddr == 0, then no address in the executable is fixed, i.e.
82 * it is fully relocatable. In that case @hiaddr is the size of the
83 * executable minus one.
84 *
85 * This function will not return if a valid value for guest_base
86 * cannot be chosen. On return, the executable loader can expect
87 *
88 * target_mmap(loaddr, hiaddr - loaddr + 1, ...)
89 *
90 * to succeed.
91 */
92 void probe_guest_base(const char *image_name,
93 abi_ulong loaddr, abi_ulong hiaddr);
94
95 /* syscall.c */
96 int host_to_target_waitstatus(int status);
97
98 #ifdef TARGET_I386
99 /* vm86.c */
100 void save_v86_state(CPUX86State *env);
101 void handle_vm86_trap(CPUX86State *env, int trapno);
102 int do_vm86(CPUX86State *env, long subfunction, abi_ulong v86_addr);
103 #elif defined(TARGET_SPARC64)
104 void sparc64_set_context(CPUSPARCState *env);
105 void sparc64_get_context(CPUSPARCState *env);
106 #endif
107
is_error(abi_long ret)108 static inline int is_error(abi_long ret)
109 {
110 return (abi_ulong)ret >= (abi_ulong)(-4096);
111 }
112
113 #if (TARGET_ABI_BITS == 32) && !defined(TARGET_ABI_MIPSN32)
target_offset64(uint32_t word0,uint32_t word1)114 static inline uint64_t target_offset64(uint32_t word0, uint32_t word1)
115 {
116 #if TARGET_BIG_ENDIAN
117 return ((uint64_t)word0 << 32) | word1;
118 #else
119 return ((uint64_t)word1 << 32) | word0;
120 #endif
121 }
122 #else /* TARGET_ABI_BITS == 32 && !defined(TARGET_ABI_MIPSN32) */
target_offset64(uint64_t word0,uint64_t word1)123 static inline uint64_t target_offset64(uint64_t word0, uint64_t word1)
124 {
125 return word0;
126 }
127 #endif /* TARGET_ABI_BITS != 32 */
128
129 void print_termios(void *arg);
130
131 /* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */
132 #ifdef TARGET_ARM
regpairs_aligned(CPUArchState * cpu_env,int num)133 static inline int regpairs_aligned(CPUArchState *cpu_env, int num)
134 {
135 return cpu_env->eabi;
136 }
137 #elif defined(TARGET_MIPS) && defined(TARGET_ABI_MIPSO32)
regpairs_aligned(CPUArchState * cpu_env,int num)138 static inline int regpairs_aligned(CPUArchState *cpu_env, int num) { return 1; }
139 #elif defined(TARGET_PPC) && !defined(TARGET_PPC64)
140 /*
141 * SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs
142 * of registers which translates to the same as ARM/MIPS, because we start with
143 * r3 as arg1
144 */
regpairs_aligned(CPUArchState * cpu_env,int num)145 static inline int regpairs_aligned(CPUArchState *cpu_env, int num) { return 1; }
146 #elif defined(TARGET_SH4)
147 /* SH4 doesn't align register pairs, except for p{read,write}64 */
regpairs_aligned(CPUArchState * cpu_env,int num)148 static inline int regpairs_aligned(CPUArchState *cpu_env, int num)
149 {
150 switch (num) {
151 case TARGET_NR_pread64:
152 case TARGET_NR_pwrite64:
153 return 1;
154
155 default:
156 return 0;
157 }
158 }
159 #elif defined(TARGET_XTENSA)
regpairs_aligned(CPUArchState * cpu_env,int num)160 static inline int regpairs_aligned(CPUArchState *cpu_env, int num) { return 1; }
161 #elif defined(TARGET_HEXAGON)
regpairs_aligned(CPUArchState * cpu_env,int num)162 static inline int regpairs_aligned(CPUArchState *cpu_env, int num) { return 1; }
163 #else
regpairs_aligned(CPUArchState * cpu_env,int num)164 static inline int regpairs_aligned(CPUArchState *cpu_env, int num) { return 0; }
165 #endif
166
167 /**
168 * preexit_cleanup: housekeeping before the guest exits
169 *
170 * env: the CPU state
171 * code: the exit code
172 */
173 void preexit_cleanup(CPUArchState *env, int code);
174
175 /*
176 * Include target-specific struct and function definitions;
177 * they may need access to the target-independent structures
178 * above, so include them last.
179 */
180 #include "target_cpu.h"
181 #include "target_structs.h"
182
183 #endif
184